Pipe and conduit bender



May 1932- I G. w. MEIGHAN 1,859,406

PIPE AND GONDUIT BENDER Q Inventor W By A llorney Ma 24, 1932. G HAN 1,859,406

PIPE AND CONDUIT BENDER Filed Feb. 20, 1931 3 Sheets-Sheet 2 550796 W Ve z'g/z an,

A tlomey G. w. MEIGHAN 1,859,406

PIPE AND CONDUIT BENDER Filed Feb. 20, 1931 5 Sheets-Sheet 3 A Home y Inventor I ,awyefffffz/yimiz,

m \N T:IIQIIIIIII m mlw il I I I I I I I I l I l May 24, 1932.

which-is cheaply and easilymanufactured,

Patented May 24, 1932 .1 UNITED STATES PATENT OFFICE I GEoReE'WILLIAirMEIeHAN, or nontrrrnnnsniv, NEW JERSEY I V ru n AND CONDITIT BENDER v A pplication filed February 20, 1931. Serial No. 517,358.

'This invention relates to a .machine for manually bending pipes or conduits, whereby to form accurate and uniform bends of predetermined angularity, and also. to form offsets and double bends and elbows in said pipes and conduits with easeand dispatch.

Itis an object of this invention to provide a simple and efiicient machine of this type, which is extensible to accommodate different; lengths of pipes or conduits, and

.- and otherwise admirably suited for the purpose for whichit is designed.

' These'and other objects of the invention,

' its nature, and its composition and arrange ment and combination of parts will be readily understood by anyone acquainted with the art to which this invention relates upon consulting the following descriptionsof the drawings, in which 1 a p 1 Figure 1 is a generalside elevation of my improved bending machine showing it positioned to make'a right angular elbow in a pipe or conduit.

-Figure 2-is a viewsimilar to Figure 1 showing the machine positioned to form an 7 ofiset in a pipe or conduit.

of the machine 1 per groove in Figure3. I

Figure 5. is a similariview taken through the lower groove of Figure'3;

. Figure 6 is a perspectlve view of thetrack I and pipe or conduit support constituting the base of the machine, Figure 6 showing per-' bending block.

spectively the inner member thereof.

Figure 7 is an end view taken from the left of- Figure 3 showing the mounting of the. base member shown in Figure 6 within the main base member showing-associated with thebase member the sliding abutment.

Figure 8 is a transverse verticalcross sectional view taken from the left of the bendingblocks transversely of Figure 3.

- 1 Figure 9 is a similar view looking toward .the left through the bending mechanism.

Figure 10 is a top plan view ofthe lower numeral 5 designates generally. an'open botably disposed and adapted to be extended therefrom an inner member 6,fwhich is re- .jected through adepending portion 11 on "a indicated. at 14 to form a guidefor the conduit or. pipe which islaidi therein: V Anopen frame consisting of side members -with nested grooves 19 and 20, respectively, the'groove 19-being in alignment with and --in the base member 5'. V

vided with a lateral extension 21 constituting v 'tudinal groove 22 aligned with and in longibending structure is .a hand-Clever 23, the

its lower end carries a right angularly dis- 7 block 25a having inits upper face longitudi- Figure 11 is. a perspective ,v'iew'ofthe low er, swinging bending block. l V

' Referring-in detail to the drawings, the

tomed channel member constituting the main base member of the machine, in which is slidtained within the main member 5 by means of upturned channel flanges 7 asclearly seen in Figure 7'. The member 6 has a -longitudinal slot or channel 8 formed in-oneside thereof to receive a head 9 ona bolt 10}proslide abutment "12 adapted torideupon the? outer face of the base member 5. A- set screw 13 projects itself through an opposite side of the member 5 to limit the sliding movement' of the inner member '6. Both the member 5 and the member 6 are semi+cir cularly depressed. throughout their a length as 15 connect the main base longitudinally spaced-from a wide doublegrooved base-section generally designated 16 which consists of a stationary member '17 andan extensible sliding member 18, which memberlS isretainedby a set screw=18a projected through-- 0 v one side of the member 17. The upper'surfaces of themembersl'? and 18 are provided in longitudinal continuation of the groove 14c= s5 Referring to Figure 10 it will be seen that the inward end of the base member -5 is proabending block and provided with'a longi-'-- tudinal continuation of the groove 20 in the memberi16. 1 i

Pivotally supported at one side ofthe pivotal point being indicated at 24, .and on posed arm25 on the end portion ofwhich is a lateral horizontally extended rectangular m0 'wil1be described.

nally and upwardly curved grooves 26 and 27. At the pivotal point 24 there is an opa An upper bending block 31 having :the 1 ed stationary with the "baseunember and spaced thereabove, and to the supportthereof the lever 23 is pivoted in such a way asto bring its curved upper face34into coincidental abutment with the lower curved face -35of thefbendingiblock 31 fLIlCbSO? as :to bring its bending block 129 in a similar relation ito the u pwardly curved i face 36 of thelbending block 21, :when "the r'h'andle or hand lever :23 :is drawn tofthe left'inithe drawings.

- I Straddlingthe opening of the framemiemb'er'ilfixand attached at one s end at. 39 "and at its other: end 1at r40 ':to ;the section il6qof :the lbase'istructure,:zis :a quadrant=4l whose-use "d/Vheniit issdesiredito make an elbow a-aipiece of :pipe or conduit,ithe desired length i v "-ofgpipeiis laid in' the groove,14,and the :Eproper measurementof length and position i flo f thebend-desired takenbyextending the pipe or conduit in coordination, with the measuring indicia :42 rlaid out between the -g100'VeSI19RI1dLQO ofrthe base section 16. The ihandlle'ver 23 is :then: drawn to the (left, the

sliding abutment :121havin'g first ibeen posiitioned Lass shown i-n'ithe ifigures of ;the :drawings 11:0 .abutilthe outer end Of the ,pipe sor conduit 43,-and the sinovement tojthe rle'fte'of ithezhandleven23- isscontinu'ed; so as tOZbIlIlg lilo ithe movable bending block 25 upwardly-:to

draw aandcpress'at-he; contacted :portion s of the ipi'pe or cond.uit, into1the; position: of: angularity-ides'ired, :theisaid 'angularity ibeingcprede- 'termined on ithe iquadrant tl, :the bending im'ovem'ent ibeing continued until the trend 2 of -=the pipe Loriconduit has been positionedupon .t.or*op'posite;the predetermined indicia onvthe quadrant-:41. -Granting=tl1at1the same setting a. of: the i abutment block' 12 1 obtains,athe 1 lengths sofpipeor conduit being the same, the :bends -:operati-ondescribed. I T For forming-double-bends or ofi sets,'=the 5,5 i onduit is transferred ffrom its :initial' sposi-' tion, to the groove 83 of the "bendingzblo'ck -31,:'and:this exposes thQiOthGf-I end portion of a the conduit or pipe to the downward pressmo ingiactioniofathe bending'block 29, which subijects itheconduit or pipe to thez groove; 22and the downwardly .=curved. :portion thereof 22a ;wl1ereby the-saidportion ofitheipipe or con- :dui-t is downwar dly bent in exactly the same upwardly curved grooves 32 and 33is mount-v "bendingopera'tion.

ment-slidable on the base between thestationblockaand theicontiguous outersendaofzthe base, and afilinearscaleomtheother end'por- Jtion of the ba se', anda'quadrantimountedadacent ith'e bending block "having indic'ia'ifor :indicating the i-an'gularity 10f movement of a formi'having an openrframe at: an intermedisatespoint-thereofli a stationary bendingsblo'ck adj ace nt the t-bending fblock shaving iindicia I will be positioned and curved tabsolutely a'c- ,1 curately for all practical ipurposesby the angle and position as the initially formed prevent flattening and other undesired deformation ofthepipes 0r conduits during the lt isto bedefinitely understood that I do not desire to limit the application of this invention-to the particular modification set out herein toillustrate the principles thereof, and so,

:anyachangeior: changes. mayzbee made in materi-al aind rstructurerand arrangement; of-ipants consistentzwith the :spirit :and scope of the invention. a

WVh'at is claimedzisz c 1. "Ai tube or baribending 'imachine ofvzthe type described comprising :a-rbase'of channel iform i havingi'an open iframeatamintermediate point thereofya stationaryebendingbloek adjacent l the open r-fraine at oneside theredfp-eo and a "spivoted'ilever carrying san upwardly swingingsbending-i block for: cooperation with the stationarybending block,';an'd an abut-' tube or bar being bent ,inthe machinegand vinner slides extensible :from :the .ends'iof the base. 1 i

:tube or bar :ibending of the type described comprising ambasexofvchannel adjacent the open framemtwne sideithereof,

and 1a l ipi-voted ,le'ver marrying a an supwa'rdly swinging bending block for eooperation wvith the stationary "bending/block andi'an i abutmentxslidable son lithe. base between itheistationary block and the rcontiguousoutersend 'lof theibase; andra linear scale on' theiothersend portion of the base,' and :a quadrantimounted foriindicatingithezangulaiiityiof movementsof 'a tube or tbariibeing bentain'i the'imaohinegand inner slides iXilBIlSlbl 1 from the 1 ends rof "the :base, said :base I and said slides ihavin'g-ilongitudinal tube or bar receivingigrooves.

i3.1.-*A tube :or bar'zbending imachine of the :type described comprising :a :base of icha-nnel iform v having an EOPGIlTfFElIIlQifliZ Rfl intermediate zpoi'ntithereofpa stationaryebendingihlock' 'fadjacent the'open frame at one side'theredf,

and a pivoted "flever carrying iantinpwardly a swinging ibendingiblock ifor cooperation' with the stationary ibeliding zbloc k, :and' aniabfitmerit islidable 011 'zthe baseabetween rth'ei stationary block and the contiguous outer-rend 

